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9f0749e3eb
This patch adds basic devicetree support for i.MX27 based SoCs. Only the bindings for which drivers exist are added here: - UART - fec - CSPI - I2C - watchdog - gpio Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
90 lines
2.7 KiB
C
90 lines
2.7 KiB
C
/*
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* Copyright 2012 Sascha Hauer, Pengutronix
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*
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* The code contained herein is licensed under the GNU General Public
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* License. You may obtain a copy of the GNU General Public License
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* Version 2 or later at the following locations:
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*
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* http://www.opensource.org/licenses/gpl-license.html
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* http://www.gnu.org/copyleft/gpl.html
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*/
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#include <linux/irq.h>
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#include <linux/irqdomain.h>
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#include <linux/of_irq.h>
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#include <linux/of_platform.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/time.h>
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#include <mach/common.h>
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#include <mach/mx27.h>
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static const struct of_dev_auxdata imx27_auxdata_lookup[] __initconst = {
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OF_DEV_AUXDATA("fsl,imx27-uart", MX27_UART1_BASE_ADDR, "imx21-uart.0", NULL),
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OF_DEV_AUXDATA("fsl,imx27-uart", MX27_UART2_BASE_ADDR, "imx21-uart.1", NULL),
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OF_DEV_AUXDATA("fsl,imx27-uart", MX27_UART3_BASE_ADDR, "imx21-uart.2", NULL),
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OF_DEV_AUXDATA("fsl,imx27-fec", MX27_FEC_BASE_ADDR, "imx27-fec.0", NULL),
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OF_DEV_AUXDATA("fsl,imx27-i2c", MX27_I2C1_BASE_ADDR, "imx-i2c.0", NULL),
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OF_DEV_AUXDATA("fsl,imx27-i2c", MX27_I2C2_BASE_ADDR, "imx-i2c.1", NULL),
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OF_DEV_AUXDATA("fsl,imx27-cspi", MX27_CSPI1_BASE_ADDR, "imx27-cspi.0", NULL),
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OF_DEV_AUXDATA("fsl,imx27-cspi", MX27_CSPI2_BASE_ADDR, "imx27-cspi.1", NULL),
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OF_DEV_AUXDATA("fsl,imx27-cspi", MX27_CSPI3_BASE_ADDR, "imx27-cspi.2", NULL),
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OF_DEV_AUXDATA("fsl,imx27-wdt", MX27_WDOG_BASE_ADDR, "imx2-wdt.0", NULL),
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{ /* sentinel */ }
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};
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static int __init imx27_avic_add_irq_domain(struct device_node *np,
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struct device_node *interrupt_parent)
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{
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irq_domain_add_simple(np, 0);
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return 0;
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}
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static int __init imx27_gpio_add_irq_domain(struct device_node *np,
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struct device_node *interrupt_parent)
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{
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static int gpio_irq_base = MXC_GPIO_IRQ_START + ARCH_NR_GPIOS;
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irq_domain_add_simple(np, gpio_irq_base);
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return 0;
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}
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static const struct of_device_id imx27_irq_match[] __initconst = {
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{ .compatible = "fsl,imx27-avic", .data = imx27_avic_add_irq_domain, },
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{ .compatible = "fsl,imx27-gpio", .data = imx27_gpio_add_irq_domain, },
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{ /* sentinel */ }
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};
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static void __init imx27_dt_init(void)
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{
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of_irq_init(imx27_irq_match);
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of_platform_populate(NULL, of_default_bus_match_table,
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imx27_auxdata_lookup, NULL);
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}
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static void __init imx27_timer_init(void)
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{
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mx27_clocks_init_dt();
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}
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static struct sys_timer imx27_timer = {
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.init = imx27_timer_init,
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};
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static const char *imx27_dt_board_compat[] __initdata = {
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"fsl,imx27",
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NULL
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};
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DT_MACHINE_START(IMX27_DT, "Freescale i.MX27 (Device Tree Support)")
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.map_io = mx27_map_io,
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.init_early = imx27_init_early,
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.init_irq = mx27_init_irq,
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.handle_irq = imx27_handle_irq,
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.timer = &imx27_timer,
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.init_machine = imx27_dt_init,
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.dt_compat = imx27_dt_board_compat,
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.restart = mxc_restart,
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MACHINE_END
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